Re: HT on or off for E5-26xx ?

On 11/07/2012 09:16 PM, David Boreham wrote:

> bash-4.1$ /usr/pgsql-9.2/bin/pgbench -T 600 -j 48 -c 48

Unfortunately without -S, you're not really testing the processors. A
regular pgbench can fluctuate a more than that due to writing and
checkpoints.

For what it's worth, our X5675's perform about 40-50% better with HT
enabled. Not the 2x you might expect by doubling the amount of
"processors", but it definitely didn't make things worse.

--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-444-8534
sthomas@optionshouse.com

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